Hilendarov, A., K. Velkova, and A. Nedeva. “Ultrasonography in the Diagnosis of Traumatic Haemothorax”. British Journal of Healthcare and Medical Research 10, no. 1 (January 24, 2023): 49–54. Accessed May 26, 2026. https://scholarpublishing.org/journals/index.php/BJHR/article/view/7199.